WBB1-8704
WBB Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
WBB1-8704
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0007 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
9 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
73 lbf
Radial static load rating
21 lbf
Limiting speed
90 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
WBB1-8704 Bearing Product Overview & Core Advantages
The WBB1-8704 is a metric single row deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. This open-type bearing is designed primarily for radial loads and is characterized by its high limiting speed and P0 tolerance class, making it suitable for high-speed, low-noise operations in demanding environments.
WBB1-8704 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| WBB1-8704 | Manufacturer's specific series designation for this miniature bearing series. |
| Open (Seal Type) | No seals or shields, allowing for higher speeds and easy re-lubrication, but requiring a clean operating environment. |
| P0 (Tolerance Class) | Standard dimensional and running accuracy per ISO standards. |
| CN (Radial Internal Clearance) | Normal radial internal clearance group. |
| None (Lubrication) | Supplied without lubrication, allowing the user to apply a lubricant suitable for the specific application. |
WBB1-8704 Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With a bore diameter of 3 mm, outside diameter of 9 mm, and a width of just 2.5 mm, this bearing is ideal for space-constrained miniature and instrument applications. Its low weight of 0.0007 kg minimizes inertial forces.
- High-Speed Capability: The open construction and optimized stainless steel cage contribute to a high limiting speed of 90,000 rpm, making it an excellent choice for high-speed applications.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, providing reliable operation in humid or corrosive environments and ensuring long service life.
- Precision Performance: Manufactured to P0 tolerance class with a CN radial clearance, this bearing ensures consistent and smooth running, which is critical for precision mechanisms.
WBB1-8704 Bearing Typical Application Areas
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment.
- Small Motors: Stepper motors, coreless motors, and miniature DC motors.
- Office Automation Equipment: Printers, scanners, and copiers.
- Medical Devices: Small surgical handpieces, dental tools, and diagnostic equipment.
- Robotics: Joints and drives in small-scale robotic arms and automation systems.
